Engine crankshaft turning adjustment tool



Aug. 16, 1949. F. J. VOYCHESKE 2,479,144

ENGINE CRANKSHAFT TURNING ADJUSTMENT TOOL 2 Sheets-Sheet 1 Filed Oct. 26, 1945 In uentor By %v My ,1 [I]. u omeys Aug. 16, 1949. F; .1. VOYCHESKE- ENGINE CRANKSHAFT TURNING ADJUSTMENT TOOL 2 Sheets-Sheet 2 Filed Oct. 26, 1945 'mmmun 1/1 I I Inventor iZ/zlr J/ua Eye/beaks Patented Aug. 16,, 1949 ENGINE CRANKSHAFT TURNING ADJUSTMENT TOOL Felix John Voycheske, Omaha, Nebr.

Application October 2.6, 1945, Serial No. 624,895

1 Claim. 1

This invention relates to a tool or fixture Which may be attached temporarily to an engine and manually operated to turn the fly wheel of the engine, and therefore its crank shaft, so that any bearings may be tested or adjusted, and any connecting rod may be inspected or replaced.

The primary object of the invention is to enable the fly wheel, of an engine to be manually turned b a mechanic without requiring the mechanic to alter his working position under the engine.

The above and other objects may be attained by employing this invention which embodies among its features a frame which ma be temporarily affixed to the casing of an engine, a pin,- ion supported by the frame for meshing engagement with the starting gear carried by the fly wheel of the engine and. means to enable the pinion to be turned from a position beneath the engine whereby the fly wheel and crank shaft of the engine may be turned in its bearings to bring various elements of the engine into a position for inspection or repairs.

In the drawings:

[Figure 1 is a side elevation.

Figure 2 is a similar view, showing the lower portion in vertical section.

Figure 3 is rear elevation, showing engine parts in dotted lines.

Figure 4 is a top plan view of the attachment shown removed from the engine.

Figure 5 is a detail side view of the pinion gear detached from its supporting frame.

Referring to the accompanying drawings, which illustrate the practical embodiment of the invention, 5 designates the upper part of the housing of an engine fly wheel 6, Which is mounted on the engine crank shaft 1 in the usual manner.

My improved tool or fixture includes the arched frame '8, which is provided with connecting lugs 9 and I 0, adapted to be bolted directly to the ends of the housing 5, by the bolts 1 l.

The central and lower part of the frame 8 is formed with a slot l2, and provided with a depending housing l3 having side wals l3a and l3b.

Within the housing l2 a pinion gear I8 is supported in bearing frame 14, and this frame It is pivotally secured at one end by the bolt 15 to the side walls 13aand I32), and adiustably secured at the other end by the bolt 16, and hence can be shifted through the arcuate slots l! formed in the side walls 13a and IN: of the housing 13.

The bearing frame It is provided with opposing side walls Ma and Mb and the pinion gear 18 is located between these side walls. This gear is equipped with a shaft l9 which extends through the arcuate slots 20 formed in the side walls Ma and lb, and each end of this shaft is formed with a squared socket Ida to receivea handle or wrench, so that the pinion gear may be manually turned,

The teeth of the pinion gear are adapted to have meshing engagement with the teeth of the engine fly wheel. The slots i? of the housing 13, and the slots 28 of the bearing frame 14 permit of the necessary raising and lowering of the pinion gear so that its teeth will establish the proper meshing engagement with the teeth of the fl wheel; and the pinion may be held in such position by tightening the bolts 18.

By attaching the main frame 8 to the engine housing and adjusting the pinion gear against the teeth of the engine fly wheel, any mechanic may turn over the crank shaft by hand, while lying under the engine.

tool or fixture will be found particularly useful for adjusting and inspecting engine bearings, and connecting rods and a single main frame can be designed which will fit various makes of automobile truck engines.

It is understood that the improved tool or fixture may be constructed of various materials, and. that the construction of the details, and their combination and arrangement may be varied within limits, as defined by the claim hereof.

Having described my invention I claim as new:

A tool for turning engine shafts, comprising arched main frame having lugs on the opposite sides thereof attachable to the sides of the housing of an engine fly wheel, said main frame hay ing a central slot providing opposing side walls and a housing depending from said side walls, each of the side walls of the depending housing having opposed arcuate slots, 2. hearing frame mounted in the slot of the main frame'and between the side walls of the housing last-named a pinion gear'arranged between the side walls of the bearing frame and depending housing, means for pivotally securing the bearing frame to the depending housing, and means for adjusting said bearing frame in said housing to raise and lower the pinion gear.

' FELIX JOHN VOYCHESKE.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,119,855 Mitchell Dec. 8, 1914 1,150,178 Diefendorf Aug. 17, 1915 1,332,032 Dick Feb. 24, 1920 1,533,072 Brockway Apr. 7, 1925 1,735,991 Bennett Nov. 19, 1929 1,884,874 Ross Oct. 25, 1932 2,147,027 Grier Feb. 14, 1.939 2,288,228 De Biasse June 30, 1942 

